213023023 has 4 divisors (see below), whose sum is σ = 218780440. Its totient is φ = 207265608.

The previous prime is 213022991. The next prime is 213023051. The reversal of 213023023 is 320320312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213023023 - 2⁵ = 213022991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213022988 and 213023006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213023093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2878653 + ... + 2878726.

It is an arithmetic number, because the mean of its divisors is an integer number (54695110).

Almost surely, 2^213023023 is an apocalyptic number.

213023023 is a deficient number, since it is larger than the sum of its proper divisors (5757417).

213023023 is an equidigital number, since it uses as much as digits as its factorization.

213023023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5757416.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 213023023 is about 14595.3082529969. The cubic root of 213023023 is about 597.2307784983.

Adding to 213023023 its reverse (320320312), we get a palindrome (533343335).

The spelling of 213023023 in words is "two hundred thirteen million, twenty-three thousand, twenty-three".